Barrows Goldeneye (Bucephala islandica) Science Article 3 abstract In holarctic ducks, pair formation occurs during the winter or the spring migration, or both, and pair bonds are seasonal, usually lasting until the onset of incubation by the female (McKinney 1986). Because males desert their mates during incubation and leave thebreeding grounds for molting, it has […]

Barnacle Goose (Branta leucopsis) Science Article 8 abstract Habitat use of two populations of Barnacle Goose Branta leucopsis, one arctic and one temperate breeding, was studied on Schiermonnikoog, an island in the Dutch Wadden Sea, during winter and spring 1988/89. Although both populations have overlapping winter ranges, habitat choice on a smaller scale differed in […]

Barnacle Goose (Branta leucopsis) Science Article 1 abstract We tested the hypotheses that the relationship between heart rate (fH) and the rate of oxygen consumption (V . O,) differs between walking and flying in geese and that fH and O, have a U-shaped relationship with flight speed. We trained barnacle geese Branta leucopsis (mean mass […]

Barnacle Goose (Branta leucopsis) Science Article 6 abstract The within season site tenacity of staging Barnacle Geese Branta leucopsis was investigated using two years of observations of individually colour ringed birds in Schleswig Holstein/Germany. Arrays of observations of individual geese show that some birds move among areas in Schleswig Holstein within seasons. Movements occur over […]

Barnacle Goose (Branta leucopsis) Science Article 7 abstract A colony of Svalbard Barnacle Geese Branta leucopsis was studied near Ny Alesund, Spitsbergen. Breeding started in 1980 and the colony size followed a sigmoidal curve with little increase in numbers in the period 1992-1995. Over the period 1991-1995 gosling growth declined, mortality during growth increased and […]

Barnacle Goose (Branta leucopsis) Science Article 12 abstract Long-distance dispersal can have far-reaching consequences for the amount of gene flow between populations. However, individuals usually disperse to places well outside the study area, which makes long-distance dispersal hard to study. In this study, the fate of c. 4500 individually marked Barnacle Geese Branta leucopsis hatched […]

Barnacle Goose (Branta leucopsis) Science Article 10 abstract By attaching 9-g loggers (recording dusk and dawn times to a memory chip) to the coded leg rings of Barnacle Geese Branta leucopsis caught in a breeding colony at Tobseda (68 deg 35’N, 52 deg 20’E) on the arctic coast of the Russian Federation in 2003 and […]

Barnacle Goose (Branta leucopsis) Science Article 11 abstract The nutritional quality of forage plants varies in space and time. This variation is presumed to drive the annual migration of herbivore species which follow peaks in the availability of high quality forage between sites. The green-wave-hypothesis predicts that during spring migration to northern breeding sites, geese […]

Barnacle Goose (Branta leucopsis) Science Article 4 abstract The first all-Estonian count of Barnacle GeeseBranta leucopsis took place in spring 1968, whenabout 10 000 staging geese were counted (Kumari1971). In the first half of the 1970s the number ofgeese was estimated at 15 000-20 000 (Jagi 1976).Since 1974 aerial counts have been made to estimatetheir […]

Barnacle Goose (Branta leucopsis) Science Article 9 abstract Before the final move to their breeding sites, many arctic-nesting geese visit staging areas close by, so called pre-breeding areas. The present study investigated the timing of migration by Barnacle Geese Branta leucopsis in relation to the dynamics in body stores during this period. The study area […]